F - Mech Eng,Light,Heat,Weapons – 01 – D
Patent
F - Mech Eng,Light,Heat,Weapons
01
D
F01D 11/12 (2006.01) C23C 28/00 (2006.01)
Patent
CA 2446771
A gas turbine engine abradeable seal system is provided comprisinga seal assembly and a cooperating interacting turbine blade. The turbine blade has a tip portion containing cubic boron nitride abrasive particles and the seal assembly has a superalloy substrate with a bond coat thereon having a surface roughness of at least 300 RA and a porous ceramic abradeable seal material on the bond coat having a porosity of from 5 to 15 volume %.
L'invention concerne un système de joint de moteur de turbine à gaz, comprenant un ensemble joint et une aube de turbine qui coopère en interaction. Cette aube présente une zone d'extrémité renfermant des particules abrasives cubiques au nitrure de bore, et l'ensemble joint comporte un substrat en superalliage, avec une couche d'accrochage dont la rugosité de surface est au moins égale à 300 RA, et sur cette couche, un matériau d'étanchéité en céramique pouvant être soumis à une abrasion, dont la porosité est comprise entre 5 et 15 % vol.
Fenton Richard
Howard Peter
Shankar Ravi
Chromalloy Gas Turbine Corporation
Deeth Williams Wall Llp
LandOfFree
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